Jack’s back! New NBC president Robert Greenblatt announced at the Television Critics Association’s summer press tour in Beverly Hills early Monday that the network is developing a new half-hour comedy starring Will & Grace Emmy winner Sean Hayes.

Other headlines coming out of the Peacock’s executive session…

* NBC is developing a new hour-long drama from Law & Order boss Dick Wolf about firefighters.

* Greenblatt will in fact use the Super Bowl to tee up the Season 2 launch of The Voice, on Sunday, Feb. 5, 2012. The Voice‘s two-hour time slot premiere will air the following night, from 8 to 10.